code: def run(self):
      from dvc.config import ConfigError
  
      all_config = self.config.load_config_to_level(None)
      if self.args.new in all_config.get("remote", {}):
          raise ConfigError(
              f"Rename failed. Remote name {self.args.new!r} already exists."
          )
  
      with self.config.edit(self.args.level) as conf:
          self._check_exists(conf)
          conf["remote"][self.args.new] = conf["remote"][self.args.name]
          del conf["remote"][self.args.name]
          self._rename_default(conf)
  
      up_to_level = self.args.level or "repo"
      for level in reversed(self.config.LEVELS):
          if level == up_to_level:
              break
          with self.config.edit(level) as level_conf:
              self._rename_default(level_conf)
  
      return 0
  
imports: from dvc.cli import formatter
  from dvc.cli.utils import append_doc_link
  from dvc.commands.config import CmdConfig
  from dvc.ui import ui
  from dvc.utils import format_link
label_desc: Use image node_id 2 for calling the CmdRemoteRename obj's underlying member method code with example usage: obj.run() and returns: int